Warning: file_put_contents(/www/wwwroot/ppbbu/62383.com/cache/b34ae4605895326b3d6f0439155fa810.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/62383.com/index.php on line 55 symmetric英英字典_symmetric剑桥英语解释_symmetric柯林斯英文解释_流逝汉英词典
1. ADJ (of a relation) holding between a pair of arguments x and y when and only when it holds between y and x, as … is a sibling of … but not … is a brother of … (关系)对称的[logic]